Hello Rob, thanks for the awesome videos and the informative content. I just have a question, why is it that dyneema is said to shoot better compared to mono when used as a shooting line? To me it is more intuitive that mono has less drag in the water since it's usually thinner and has a smoother surface. Is it because dyneema is relatively more flexible?
Good morning Rob, thank you for your dedication to this sport, and to demystifying the speargun object. I intend to convert to a roller gun, but I have a doubt that I haven't found yet, is the calculation for the correct size of bands, and should I use pre-tension? the weapon has a length, head to notch of 90cm, and 88cm head to hook. to a single roller, 6.5mm shaft should i use 14mm or 16mm bands? thank you, good continuation!
Hi Rob, thank you for the great video! I had a question please: is it possible to convert a traditional RA 140cm carbon railgun into a 130 roller? This would require cutting 10cm off the carbon barrel and adding a new roller muzzle as well as pretension pins on each side of the handle. I would have thought it is possible to do the cutting job neatly using a hacksaw blade and a mitre box, but I wanted to confirm that doesn’t risk compromising the integrity of the carbon, such as creating a risk the barrel might split/crack from the extremity which was cut. Do you any views/experience with this? Thanks
Sorry for the delay in answering. This can be done if you use a very sharp blade with many teeth. Problem is re plugging the barrel. I would cut it a little shorter, to 120cm rather than 130cm as there is little difference between a double rubber 130cm double wrap than a 130cm roller other than the lower recoil. Short rollers are way better than shorter standard guns but, as the length is increased the advantage decreases.
Hi Rob, love your videos mate! I have found them incredbily informative and helpful so thank you for that! I'm wondering if it's safe to change any of your guns to a Roller Muzzle? I've got a 1100 Scorpia that I'd like to try as a roller but don't convert it if that barrel and trigger mech isn't going to be suitable for a Roller?
The trigger is fine. Is it a rail or non-rail barrel? We have never tested a non-rail barrel. There is actually less load on the barrel with a roller than on a normal gun.
Ho Rob! been a big fan of the GT Roller for a year now and wanted to ask you if your roller muzzle can be used with shark fins, i have a shorter Tuna that I would like to convert, But Ive noticed that all your rollers come with notched shafts. will a shark fins shaft shoot low? (bridle riding the muzzle) cheers Ramiro
Hi Rob Thx for another valuable video. I would like to learn : ıs your blue 16mm bulk rubbers are progressive or rective ?. I need a progressive highly strech rubber for my new roller gun and your comment is very reliable. Best wishes from sunny Istanbul Tarkan
Hi Tarkan, We have done many tests and we can't see any difference. All rubbers increase their tension the same. Some will have a higher load at full tensions but in none of the tests we do, any truth to these claims of reactive or progressive. I might be wrong but I think it's just smoke and mirrors 😜👍
@@roballen1578 Thanks for the quik response. Looking fw to see a video about the length of RA 16mm rubbers in a roller gun. The length calculation metod actually. Best wishes Tarkan
will this work well with spearshafts that do not have the shark fin? becasue I think the rob allen shafts generally come with the cut notch not the shark fins
Great explanation as always :) Yes, roller guns do not shoot higher than standard guns - they shoot 'straighter'. Actually we should say standard guns shoot lower :) So when changing guns and using a roller no need to correct aiming 'higher' than we would do with a standard gun. A roller shoots further and faster compared to a standard gun of same length. So probably you hit where you aim ;) Congrats for another nice video. >
Dyneema is more expensive than nylon monofilament but when shooting around reefs or structures it is far better than nylon monofilament as it does not cut at all as fast as mono. Also the breaking strength of Dyneema is far higher than comparable diameter in steel! I use both, but actually I find Dyneema is the better choice also because you can always cut and tie knots to maintain/repair your speargun rig - with mono one is screwed if no crimps and a crimping tool is available (imagine this happens on a trip). Just my personal humble opinion :)
Hi @RobAllenSpearfishing, I have a 1000 Scorpia, perfect all round gun in N.Z. wanting to know if you have an idea on mounting a roller to this. will it work due to not having rail etc. Cheers , Joseph.
Hey rob is it okay to freeze speargun bands? I always heard that freezing your bands is a good way to preserve them, but recently I read somewhere that it’s bad and can ruin your bands now I am really worried about my pre made bands since they’ve been sitting in the freezer for well over a month. If it is bad to freeze speargun bands will my bands that have been sitting in a freezer for over a month still be alright for spearfishing?
We have never tried to freeze and see what problems might occur. All manufacturers of latex tubing that I know of do not recommend it. The bottom of the fridge in the vegetable tray is said to be best. It is also better to store without the wishbone fitted. If there is any stress on the rubber, even though it is stored in a dark, cool place, will degrade it.
Hey Rob! I just order the roller head muzzle but am having problems with one of the ceramic bearings not spinning nearly as smoothly as the other one. I have tried running it under warm water with no luck. Is this an issue that will resolve itself when I start shooting the gun? Or do you have any suggestions? As I said the product is brand new straight out of the box and I am trying to avoid sending it back. Thank you! Luka
@@golixtube Try our distributor there. Feñasub SA La castellana sur 170 office 302 Santiago Chile Fernando Alcaino / Fernando Anais Cell +56991959229 / +56976216922 contacto@fenasub.cl Website: fenasub.cl/
@@RobAllenSpearfishing i haber try it but they dont import those thing i have ask for the tuba roller 110 or 100 and they dont want to import them too. I think that the People that want those things are minimun
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My RA roller conversion kit just arrived! Great video Thank you!!
As always very clear for the best material ;-)
Superb tips- now I have to go redo all my guns.. BTW Lovely hat collection ;)
Thank Rob👌🏼
Great video, thanks 👌
Great stuff
Hello Rob, thanks for the awesome videos and the informative content.
I just have a question, why is it that dyneema is said to shoot better compared to mono when used as a shooting line? To me it is more intuitive that mono has less drag in the water since it's usually thinner and has a smoother surface. Is it because dyneema is relatively more flexible?
Dyneema doesn’t form a generalized shape from being wrapped around the line release the line straightens as it’s shot
Good morning Rob, thank you for your dedication to this sport, and to demystifying the speargun object.
I intend to convert to a roller gun, but I have a doubt that I haven't found yet,
is the calculation for the correct size of bands, and should I use pre-tension?
the weapon has a length, head to notch of 90cm, and 88cm head to hook.
to a single roller, 6.5mm shaft should i use 14mm or 16mm bands?
thank you, good continuation!
14mm bands are best for the thinner spears. Use a scale to set the pre-load. Pre-load should be around 10 to 15kg.
Hi Rob, thank you for the great video!
I had a question please: is it possible to convert a traditional RA 140cm carbon railgun into a 130 roller? This would require cutting 10cm off the carbon barrel and adding a new roller muzzle as well as pretension pins on each side of the handle. I would have thought it is possible to do the cutting job neatly using a hacksaw blade and a mitre box, but I wanted to confirm that doesn’t risk compromising the integrity of the carbon, such as creating a risk the barrel might split/crack from the extremity which was cut. Do you any views/experience with this? Thanks
Sorry for the delay in answering. This can be done if you use a very sharp blade with many teeth. Problem is re plugging the barrel. I would cut it a little shorter, to 120cm rather than 130cm as there is little difference between a double rubber 130cm double wrap than a 130cm roller other than the lower recoil. Short rollers are way better than shorter standard guns but, as the length is increased the advantage decreases.
Hi Rob, love your videos mate! I have found them incredbily informative and helpful so thank you for that! I'm wondering if it's safe to change any of your guns to a Roller Muzzle? I've got a 1100 Scorpia that I'd like to try as a roller but don't convert it if that barrel and trigger mech isn't going to be suitable for a Roller?
The trigger is fine. Is it a rail or non-rail barrel? We have never tested a non-rail barrel. There is actually less load on the barrel with a roller than on a normal gun.
@@roballen1578 Thanks for the reply Rob - it's a Rail Barrel. Would that be safe to convert to a roller?
@@isaacernst6201 Yes, same barrel we use for factory made rollers.
@@roballen1578 thanks so much rob! Really appreciate you taking the time and helping me out. Cheers mate
perfect
Ho Rob! been a big fan of the GT Roller for a year now and wanted to ask you if your roller muzzle can be used with shark fins, i have a shorter Tuna that I would like to convert, But Ive noticed that all your rollers come with notched shafts. will a shark fins shaft shoot low? (bridle riding the muzzle)
cheers
Ramiro
It should not br a problem if you load to the back fin if it has double fins.
Hello Allen , What lb test was the dyneema line on the shaft to the bungee recommened for a 1200 tuna roller conversion
We recommend 1,8mm to 2mm. It is around 500 lb break strain but you do lose a lot to the knot.
For a caranx 70 can i go for the kit to convert it to roller?
Good morning rob allen
Evening here 😁👍
Hi Rob
Thx for another valuable video.
I would like to learn : ıs your blue 16mm bulk rubbers are progressive or rective ?.
I need a progressive highly strech rubber for my new roller gun and your comment is very reliable.
Best wishes from sunny Istanbul
Tarkan
Hi Tarkan, We have done many tests and we can't see any difference. All rubbers increase their tension the same. Some will have a higher load at full tensions but in none of the tests we do, any truth to these claims of reactive or progressive. I might be wrong but I think it's just smoke and mirrors 😜👍
@@roballen1578 Thanks for the quik response. Looking fw to see a video about the length of RA 16mm rubbers in a roller gun. The length calculation metod actually.
Best wishes
Tarkan
@@tokert1571 Been up a while. th-cam.com/video/L81mS_CtYlU/w-d-xo.html
will this work well with spearshafts that do not have the shark fin? becasue I think the rob allen shafts generally come with the cut notch not the shark fins
It will work fine.
Great explanation as always :)
Yes, roller guns do not shoot higher than standard guns - they shoot 'straighter'. Actually we should say standard guns shoot lower :)
So when changing guns and using a roller no need to correct aiming 'higher' than we would do with a standard gun.
A roller shoots further and faster compared to a standard gun of same length. So probably you hit where you aim ;)
Congrats for another nice video. >
Good explanation thanks 👍 That's what I was trying to say 😁
At 12:00 you recommend Dyneema versus mono. Does this apply to just the roller gun, or all of your spear guns?
Just the rollers. For some reason it just works better with Dyneema.
Dyneema is more expensive than nylon monofilament but when shooting around reefs or structures it is far better than nylon monofilament as it does not cut at all as fast as mono. Also the breaking strength of Dyneema is far higher than comparable diameter in steel!
I use both, but actually I find Dyneema is the better choice also because you can always cut and tie knots to maintain/repair your speargun rig - with mono one is screwed if no crimps and a crimping tool is available (imagine this happens on a trip). Just my personal humble opinion :)
Hello Rob. Will this conversion be possible on a old Arbalete Champion gun?
Sorry for the late reply. No it will not fit because the barrel diameter is not the same.
Hi @RobAllenSpearfishing, I have a 1000 Scorpia, perfect all round gun in N.Z. wanting to know if you have an idea on mounting a roller to this. will it work due to not having rail etc. Cheers , Joseph.
Hi Joseph, I have never tried it so can't be sure, I don't see why not though.
@@RobAllenSpearfishing cheers Rob, i will give it a go.
Hey rob is it okay to freeze speargun bands? I always heard that freezing your bands is a good way to preserve them, but recently I read somewhere that it’s bad and can ruin your bands now I am really worried about my pre made bands since they’ve been sitting in the freezer for well over a month. If it is bad to freeze speargun bands will my bands that have been sitting in a freezer for over a month still be alright for spearfishing?
We have never tried to freeze and see what problems might occur. All manufacturers of latex tubing that I know of do not recommend it. The bottom of the fridge in the vegetable tray is said to be best. It is also better to store without the wishbone fitted. If there is any stress on the rubber, even though it is stored in a dark, cool place, will degrade it.
RobAllenSpearfishing would it make any difference if I take my bands out of the freezer now or would the damage already be done?
@@matthewmartich8772 no idea, only one way to find out 😜
Hey Rob!
I just order the roller head muzzle but am having problems with one of the ceramic bearings not spinning nearly as smoothly as the other one. I have tried running it under warm water with no luck. Is this an issue that will resolve itself when I start shooting the gun? Or do you have any suggestions? As I said the product is brand new straight out of the box and I am trying to avoid sending it back.
Thank you!
Luka
Hi Luka, try using it a few days and see if it frees up. There might be some dirt that got in. If not, we will replace.
@@RobAllenSpearfishing Hey Rob! Got everything sorted just had to replace one of the bearings and it’s running like butter!
Appreciate it.
Luka
@@LukaDolman 👍👍
Hello, I have a Rob Allen 1200 and I want to convert it to a roll. Will I need to change the trigger cassette?
No need to.
Aloha Rob, can I convert my 130 rob allen speargun to a roller? 🤙🏾😎
You can but it will give you over 9m range. (30 feet) If you cut it to 110 you will still have better range than the 130.
Are you going to make a double roller muzzle ?
Nothing currently planned, maybe in the future.
Hy rob ! Were can i by that conversion kit in namibia ?
Do sell also the rubber for the *kit" ?
You will have to order from us direct.
Email Trevor on divefac@africa.com for any gear and or parts.
@@RobAllenSpearfishing ok! I will do that!
Is it possible to convert my 90cm sparid evo into a roller?
Yes you can but it might not float as the muzzle is a little heavier.
can you put roller adapter on Wahoo?
Yes.
Where is this kit available
Depends where you are in the world.
Where i can buy the conversion roller kit, i can do the rubbers but i cant find the conversion kit 😢
It depends where you are in the world, where are you?
I live in Chile South america
@@golixtube Try our distributor there.
Feñasub SA
La castellana sur 170 office 302
Santiago
Chile
Fernando Alcaino / Fernando Anais
Cell +56991959229 / +56976216922
contacto@fenasub.cl
Website: fenasub.cl/
@@RobAllenSpearfishing i haber try it but they dont import those thing i have ask for the tuba roller 110 or 100 and they dont want to import them too. I think that the People that want those things are minimun
@@golixtube I will talk to them when they next order.
Would this be worth doing on a Tuna 1000 or is this better for the 120 and up?
We think a 1100 is best maximum.
Haw to maek roller
For a caranx 70 can i go for the kit to convert it to roller?
Yes you can but the added weight of the roller will make the gun sink without the spear in it.